Sign board at end looks to say 35th St, which would make it the Chicago Ave line. Cars turned off Laramie Ave in the town of Cicero, heading west to Austin Blvd. Line was converted to buses in 1941. Picture had to be prior to 1939 as new blue and cream paint scheme was not on this car. As a young child I rode this line before conversion to buses.
Caption data from George Rogers; Edward Frank Jr photo courtesy the Ray Bowlan collection